Our dangerously depleted supply of spacecraft fuel just got a little bump from the Department of Energy. By Shaunacy Ferro
Looks Like Jell-O, Tastes Like Space Fuel A pellet of plutonium-238, the fuel source used in much of NASA's space exploration. Los Alamos National Laboratory
For the first time in more than two decades, the United States can put a "Made in the USA" stamp on non-weapons grade plutonium, Discovery News reports.
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